[backend] Try to fix issue in Grafana logs

[jpkha]

Context

Briefly describe the purpose and context of this PR. Include relevant screenshots or screen recordings for the product team.

We do have log in Grafana but we could not clearly read it. I tried to find a way to sanitize the data in order to be readable as JSON and have a bit more log in case we are failing to serializable.

How to test

Provide step-by-step instructions to test your changes. Include screenshots of your local testing results.

Related issues

• Related to #issueNumber

Checklist

Quality

• I consider this work complete and ready for review
• I tested all features and edge cases
• I refactored code where necessary to improve quality
• I made sure my code meets development guidelines
• I performed a self-review of my code

Testing

• I wrote test cases for the relevant use cases (unit, integration or e2e tests)
• (Bug fixes only) I added tests that reproduce and verify the fix

What tests have been made

• Unit tests
• Integration tests
• E2E tests
• Local manual tests

Additional information

Any additional context, dependencies, or concerns reviewers should know about.

[codecov]

Codecov Report

❌ Patch coverage is 19.91701% with 193 lines in your changes missing coverage. Please review.
✅ Project coverage is 24.56%. Comparing base (1f7cd6a) to head (c943b2d).

Files with missing lines	Patch %	Lines
apps/portal-api/src/utils/app-logger.util.ts	19.91%	193 Missing ⚠️

Additional details and impacted files

@@               Coverage Diff               @@
##           development    #1350      +/-   ##
===============================================
- Coverage        24.60%   24.56%   -0.04%     
===============================================
  Files              568      568              
  Lines            34153    34387     +234     
  Branches          1551     1561      +10     
===============================================
+ Hits              8404     8448      +44     
- Misses           25495    25685     +190     
  Partials           254      254              

Files with missing lines	Coverage Δ
apps/portal-api/src/utils/app-logger.util.ts	39.71% <19.91%> (-40.45%)	⬇️

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[github-actions]

Summary

Tests 📝	Passed ✅	Failed ❌	Skipped ⏭️	Other ❓	Flaky 🍂	Duration ⏱️
22	22	0	0	0	0	2m 20s

Insights

Average Tests per Run	Total Flaky Tests	Total Failed	Slowest Test (p95)
22	0	0	24.4s

Suites

22 passed, 0 failed, and 0 other

Suite	Passed	Failed	Other	Duration
✅ app/apps/portal-e2e-tests/tests/tests_files/api/user.spec.ts         ✅ should prevent user to update another one when he does not have MANAGE_ACCESS         ✅ should allow user to update another one when he has ADMINISTRATE_ORGANIZATION         ✅ should allow user to update another one when he has MANAGE_ACCESS	✅ 3	❌ 0	⏭️ 0	4.9s
✅ app/apps/portal-e2e-tests/tests/tests_files/capabilities.spec.ts         ✅ Should add subscription with capabilities	✅ 1	❌ 0	⏭️ 0	24.4s
✅ app/apps/portal-e2e-tests/tests/tests_files/csv-feeds.spec.ts         ✅ Should add CSV Feed         ✅ Should delete CSV Feed from the list         ✅ Should delete CSV Feed from the detailed page	✅ 3	❌ 0	⏭️ 0	24.0s
✅ app/apps/portal-e2e-tests/tests/tests_files/custom-dashboards.spec.ts         ✅ Should add custom dashboard         ✅ Should see the custom dashboard on public page         ✅ Should edit a custom dashboard	✅ 3	❌ 0	⏭️ 0	26.6s
✅ app/apps/portal-e2e-tests/tests/tests_files/document.spec.ts         ✅ should perform complete CRUD operations on documents	✅ 1	❌ 0	⏭️ 0	4.5s
✅ app/apps/portal-e2e-tests/tests/tests_files/one-click-deploy.spec.ts         ✅ should send telemetry event	✅ 1	❌ 0	⏭️ 0	5.9s
✅ app/apps/portal-e2e-tests/tests/tests_files/organizations.spec.ts         ✅ should perform complete CRUD operations on organizations	✅ 1	❌ 0	⏭️ 0	5.2s
✅ app/apps/portal-e2e-tests/tests/tests_files/profile.spec.ts         ✅ should update user profile information	✅ 1	❌ 0	⏭️ 0	4.7s
✅ app/apps/portal-e2e-tests/tests/tests_files/public/redirections.spec.ts         ✅ should redirect user between public pages and login page	✅ 1	❌ 0	⏭️ 0	2.8s
✅ app/apps/portal-e2e-tests/tests/tests_files/registration.spec.ts         ✅ should register openAEV platform         ✅ should register openCTI platform	✅ 2	❌ 0	⏭️ 0	6.2s
✅ app/apps/portal-e2e-tests/tests/tests_files/service-management.spec.ts         ✅ should be able to admin service	✅ 1	❌ 0	⏭️ 0	9.4s
✅ app/apps/portal-e2e-tests/tests/tests_files/service-pictures.spec.ts         ✅ should be able to add pictures to a service	✅ 1	❌ 0	⏭️ 0	4.1s
✅ app/apps/portal-e2e-tests/tests/tests_files/user.spec.ts         ✅ Should perform complete CRUD of users as BYPASS         ✅ Should only see authorized users         ✅ Should not edit first and last name as MANAGE_ACCESS user	✅ 3	❌ 0	⏭️ 0	16.7s

_{🎉 No failed tests in this run. | 🍂 No flaky tests in this run.}

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